Innovations in Data Center Power and Cooling Solutions

Siemens, Rittal partner on data centre power

German multinational technology company Siemens and Rittal, a German manufacturer of industrial enclosures, IT racks, and climate control systems, have formed a partnership to develop power distribution infrastructure for data centres, targeting increasing demands from AI workloads. The collaboration focuses on standardised systems designed to support higher rack power densities, improve deployment speed, and streamline data centre construction. Power demands in AI environments are continuing to rise, with rack densities already exceeding 100 kW and expected to increase further over the coming years. The companies aim to address these requirements through updated approaches to power distribution, cooling, and heat management. Focus on scalable power infrastructure One of the first developments from the partnership is a sidecar power system, installed within the white space of a data centre. The system uses a dedicated power rack to supply server racks, supporting a modular and scalable approach to power delivery. The design aligns with Open Compute Project standards and is intended to simplify deployment while maintaining operational reliability. “To enable the rapid growth of AI, we need smart, reliable, and scalable power supply solutions for data centres and we need them quickly,” comments Andreas Matthé, CEO Electrical Products at Siemens Smart Infrastructure. Further joint work includes the development of standardised low-voltage distribution systems for modular and containerised data centres, alongside measures aimed at improving operational and personnel safety. The partnership builds on existing collaboration between Siemens and the Friedhelm Loh Group, Rittal’s parent company, and is expected to expand into additional applications beyond data centres. For more from Siemens, click here.

Report: AI boom driving US data centres off grid

The rapid expansion of off-grid data centres across the US is emerging as a possible answer to the power constraints reshaping the AI-driven digital economy, according to a new report from law firm Troutman Pepper Locke. As artificial intelligence accelerates demand for compute capacity, the firm's report - Off-Grid Data Centers: A Potential Power Solution for AI - finds that developers, hyperscalers, and energy companies are increasingly turning to behind-the-meter and ‘island-moded’ generation to secure reliable, scalable electricity while avoiding grid congestion and regulatory delays. According to projections cited in the analysis, global data centre investment could reach $6.7 trillion (£5 trillion) by 2030, with approximately $2.7 trillion (£2 trillion) of that invested in the US market. Nowhere is the transformation more visible than in Texas, where the Electric Reliability Council of Texas (ERCOT) forecasts that data centre electricity demand could rise by 22 GW between 2025 and 2031, reaching 78 GW (or roughly 36% of total statewide demand). At the same time, AI-specialised server racks now require 50–100 kW each, up from 5–10 kW in traditional configurations just a few years ago. As microchips become more powerful and energy intensive, the report concludes that power - not silicon - has become the primary constraint on AI expansion. Natural gas as the bridge to scale One of the report's central findings is the decisive shift towards natural gas as the preferred near-term solution for off-grid facilities. Developers are prioritising dispatchable generation that can deliver the "five nines" reliability (99.999% uptime) demanded by hyperscale AI operations. While renewables remain a central part of long-term decarbonisation strategies, the analysis suggests that wind and solar alone cannot yet provide consistent, 24/7 baseload power at the scale AI requires without substantial overbuild and storage. Battery capacity, though advancing, "remains limited" in duration for utility-scale deployments. Small modular nuclear reactors reportedly hold promise but are not yet commercially deployable at scale. Natural gas generation, by contrast, can be deployed relatively quickly and offers dependable output, which the report argues makes it the dominant choice for early off-grid adopters, particularly in Texas, where fuel supply and land availability align. However, the report also cautions that turbine supply chains are tightening, and competition for equipment, skilled labour, and transmission infrastructure is intensifying as AI-driven projects accelerate nationwide. Interconnection bottlenecks fuel off-grid momentum Grid interconnection queues are increasingly congested, delaying projects in key markets. Developers are therefore reportedly pursuing behind-the-meter solutions as a bridge to eventual grid connection - or, in some cases, as a long-term strategy to maintain operational autonomy. Texas's deregulated electricity market and advanced behind-the-meter framework make it a focal point for this shift. Yet, regulatory oversight is also evolving. Senate Bill 6, passed with bipartisan support in 2025, introduced new obligations for large-load users, including requirements tied to backup generation and infrastructure cost allocation. At the federal level, policymakers are responding to the AI "gold rush" with measures designed both to accelerate data centre permitting and protect grid reliability. Proposed initiatives such as the Decentralised Access to Technology Alternatives (DATA) Act and large-load interconnection reforms could further clarify the treatment of private off-grid facilities and reduce compliance burdens. The report suggests that regulatory clarity - rather than deregulation alone - will be essential to sustaining investment momentum while safeguarding broader system stability. Community scrutiny and the $64 billion delay factor Beyond infrastructure, the report highlights mounting community resistance. Research referenced in the analysis indicates that as of early 2025, approximately $64 billion (£48.2 billion) in US data centre developments had faced delays due to bipartisan local opposition, often centred on energy costs, water use, and property impacts. Off-grid systems can mitigate some of these concerns by reducing strain on public grids and shielding residential ratepayers from infrastructure cost allocation. Nevertheless, proactive community engagement and transparent economic value propositions remain critical. The report also explores alternative models, including modular data centres colocated with renewable assets to absorb curtailed power, demonstrating that innovation in design and siting can complement traditional off-grid approaches. The partner imperative With gigawatt-scale campuses carrying price tags exceeding $1 billion (£753 million) per facility, counterparty strength and supply chain resilience are paramount, according to the report. Developers and energy providers "must conduct rigorous due diligence" on turbine manufacturers, engineering teams, landholders, and off-takers. In an off-grid environment, there is no utility fallback. Creditworthiness, long-term commitment, and technical capability become central risk determinants. The report underscores that competition is fierce and that some early entrants may struggle to scale without robust financial backing. Reliability first and always Ultimately, the report concludes that reliability eclipses all other considerations. Hyperscalers racing to lead the AI market prioritise guaranteed uptime over short-term cost arbitrage or energy trading opportunities. The business case for AI infrastructure depends on uninterrupted power, and developers are reshaping generation strategies accordingly. Brandon Lobb, Partner in Troutman Pepper Locke’s Energy Transactional Practice Group, says, "AI has shifted the centre of gravity in the energy market. Power availability - not just price - is now the defining variable in digital infrastructure strategy. "Off-grid solutions are emerging as a pragmatic response to interconnection delays, reliability demands, and community pressures. Companies that align regulatory strategy, supply chain discipline, and creditworthy partnerships will be best positioned to lead in this next phase of AI growth." As federal and state frameworks continue to evolve, off-grid data centres appear set to become a structural feature of the US energy and technology landscape, rather than a temporary workaround.

Siemens expands data centre ecosystem for AI infrastructure

German multinational technology company Siemens has expanded its data centre partner ecosystem to support the growth of next-generation artificial intelligence infrastructure, focusing on the integration of compute, power, and operational systems. The expansion includes a strategic investment in Emerald AI, a collaboration with PhysicsX, and the integration of energy storage technologies from Fluence. As AI adoption accelerates, data centre operators are facing increasing constraints around power availability and grid connection timelines. Siemens says the expanded ecosystem is intended to improve flexibility across infrastructure, helping operators scale capacity while maintaining reliability in power-constrained environments. Coordinating compute and energy systems Emerald AI’s technology enables AI workloads to shift in time and location to align with grid conditions, allowing data centre demand to respond dynamically to available power. This approach is designed to reduce peak demand pressures and support faster grid connections. Fluence’s battery energy storage systems (BESS) are intended to help operators manage large-scale AI workloads by shaping energy demand and supporting more predictable load profiles. The systems can also provide on-site power during grid constraints or outages, supporting operational continuity. In addition, Siemens is working with PhysicsX to apply physics-based AI modelling to data centre power distribution systems. Using simulation data, the approach enables engineers to model thermal behaviour in real time, reducing design times and supporting optimisation for dynamic AI workloads. Siemens said the combined ecosystem brings together workload orchestration, energy infrastructure, and AI-driven modelling to address the growing complexity of data centre design and operation as AI demand increases. For more from Siemens, click here.

'One in four DC operators fails to track energy usage'

A late‑2025 451 Research study, commissioned by Janitza, a German manufacturer of energy measurement and power quality monitoring equipment, reveals that nearly one in four data centre operators does not monitor the power consumption of their primary sites, even as AI workloads drive unprecedented pressure on electrical and cooling infrastructure. Without precise, real‑time energy data, Janitza argues, operators cannot safely scale AI‑ready capacity or protect their investments. Energy consumption without control 451 Research, the technology market intelligence unit of S&P Global, surveyed 208 data centre professionals to assess how efficiently business‑critical facilities operate today, using power usage effectiveness (PUE) as a key metric. Just over half of respondents reported a PUE between 1.5 and 2.0, while 23% admitted they are not tracking this fundamental performance indicator at all. The study highlights a structural business risk: power has become the limiting factor in building, scaling, and monetising AI‑capable infrastructure. Highly dynamic AI workloads drive power fluctuations of up to 40–70% within milliseconds, creating new challenges for power quality and increasing the risk of outages and equipment damage. The report notes, “In an environment where milliseconds matter, flexibility and data expertise are the critical differentiators.” The findings suggest that reliable, high‑resolution energy data now underpins predictive maintenance, capacity planning, and revenue optimisation in modern data centres. Janitza says operators who capture and analyse detailed power and power‑quality data can detect emerging faults earlier, extend the lifetime of critical components, and avoid unplanned downtime. As rack power densities rise towards 40–120 kW and AI models continue to grow, the study finds that comprehensive monitoring across the entire power chain, from grid connection to individual racks, is becoming a decisive competitive factor. For more from Janitza, cick here.

DSE delivers data centre energy resilience

Deep Sea Electronics (DSE), a UK-based manufacturer with over 50 years of engineering expertise, delivers advanced paralleling and ATS controllers ideally suited to the demanding requirements of modern data centre environments. In facilities where uptime is critical and resilience is non-negotiable, DSE solutions provide precise control, seamless synchronisation, and dependable automatic transfer between mains and standby power sources. Designed and manufactured in the UK, DSE’s advanced paralleling controllers enable reliable load sharing, complex multi set configurations, and fast, stable response to load changes. Complementing this, its ATS controllers ensure smooth and accurate mains failure detection and transfer, minimising risk and protecting critical infrastructure. With robust monitoring, clear diagnostics, and flexible communications integration, DSE systems support full visibility and control across standby power architectures. Backed by global technical support and long-term product availability, DSE provides data centre operators with trusted technology that strengthens energy resilience and safeguards operational continuity.

Pure DC, AVK deploy 'Europe’s first' data centre microgrid

Pure Data Centres Group (Pure DC), a designer, developer, and operator of hyperscale data centres, together with AVK, a provider of power systems and electrical infrastructure for data centres, have announced the launch of what they describe as Europe’s first, large-scale, 110MW on-site microgrid, developed to support early‑phase site operational resilience. Located within Pure DC’s Dublin campus, the on‑site energy system provides the opportunity for dispatchable capacity to support data centre operations during initial development phases, prior to full integration with the national electricity system as grid connection capacity becomes available. Over time, the campus is intended to operate as part of a hybrid energy configuration, combining grid‑supplied electricity with on‑site infrastructure designed to enhance flexibility, resilience, and system stability. What AVK describes as a "first-of-its-kind deployment in Europe" showcases the ability to use its microgrid technology for on-site power generation, and the transitional and complementary role it can play in supporting the delivery of strategically important digital infrastructure. This is particularly relevant for regions where grid reinforcement and renewable generation are being delivered on a phased basis under national planning frameworks. A replicable model The microgrid also represents a blueprint for energy generation and showcases how large-scale microgrids can be replicated across Europe - with Germany, the Netherlands, and the UK having been identified as key target markets for the technology. The Mayor of Fingal County Council, Councillor Tom O'Leary, comments, “Fingal wants to remain a champion for breakthrough technologies, but we also understand that progress must be delivered in a way that is climate friendly, resilient, and aligned with Ireland’s energy transition. That’s why this project is so important. "A microgrid that can generate and manage its own power supports future integration into the national grid, integrates renewable energy, enables storage, and trials new low‑carbon fuels like biomethane. This is innovation with purpose.” Gary Wojtaszek, Pure DC’s Executive Chairman and interim CEO, notes, “The biggest barrier to deploying AI infrastructure in Europe today isn’t technology; it’s power. This microgrid proves that even the most constrained markets can unlock new digital capacity, giving Ireland the opportunity to lead Europe’s next chapter of AI infrastructure. "The future of AI infrastructure will be built where energy and compute come together, and that’s exactly what we’re building at Pure.” Speaking about the project, Ben Pritchard, CEO of AVK-SEG, adds, “We are delighted to have worked with Pure DC to deliver this groundbreaking project. While several microgrids are already in operation in the US, until today there were none of these deployments in Europe. This project demonstrates how carefully designed onsite energy infrastructure can complement national energy planning frameworks. “This recognises that power is now the new differentiator for data centres, and that energy has shifted from being a utility to a strategic asset - shaping the location, design, economics, and competitiveness for operators. "The first of many in Europe, this microgrid has the capability to revolutionise the data centre power race as we know it, providing a complementary solution that will ease gridlock and pave the way for greater take-up of AI and cloud.” Powering the digital economy Pure DC’s microgrid is comprised of three, interconnected energy centres, with each building generating up to 30 MW of power. Energy Centre 1 (EC1) and EC2 will be fully operational by the end of 2026 and will be followed by EC3 at a later stage. The design includes combined heat and power (CHP) capability, with infrastructure in place to enable heat recovery and potential future connection to district heating networks, subject to third‑party demand and regulatory approvals. Waste heat recovery systems are also used to improve operational efficiency within the energy centres. Future water management measures include rainwater harvesting and on‑site treatment, reducing reliance on mains water for engine‑related processes. The system is engineered to accommodate incremental changes in fuel composition - including hydrogen blending - supporting future decarbonisation of the gas network in line with national policy developments. Pure DC’s battery energy storage system (BESS) is integrated to manage load fluctuations and enhance operational efficiency, improving response times and enabling more optimal engine operation. The BESS is designed to support future renewable energy integration as part of a broader transition pathway. For more from Pure DC, click here, and for more from AVK, click here.

Legrand's UPS wins Data Centre World award

French multinational infrastructure products manufacturer Legrand’s Keor FLEX modular uninterruptible power supply (UPS) has won the Best Reuse or Recycling of Products, Energy, or Data Centre Infrastructure category at the Data Centre World Awards 2026. The award was presented during Data Centre World London, held on 4–5 March at ExCel London, and recognises projects and technologies that support resource reuse, waste reduction, and improved sustainability across the data centre sector. Keor FLEX was recognised for its modular architecture and design approach aimed at extending the operational lifespan of critical power infrastructure. Modular design focused on lifecycle extension Unlike traditional UPS systems that require replacement of the entire unit at the end of its lifecycle, the Keor FLEX system allows individual power or bypass modules to be replaced or refurbished independently. The system uses a hot-swappable modular design, allowing capacity to be expanded or maintained without taking the entire system offline. According to Legrand, the system achieves 98.6% efficiency in online double conversion mode and more than 99% efficiency in ECO mode. It also has an 85% recyclability rate under IEC/TR 62635, with more than 69% recyclable metal content and packaging that includes 50% recycled material. The UPS integrates silicon carbide technology and a low-impedance internal busbar architecture, designed to reduce thermal stress on components and extend the lifespan of power modules. Keor FLEX also supports a universal battery interface that allows existing VRLA, lithium-ion, or nickel-zinc battery systems to be retained during upgrades. Marc Marazzi, Vice President at Legrand Data Center Solutions Europe, says, “Data centres are under pressure to deliver more compute power while reducing environmental impact. “Keor FLEX proves that sustainability and performance are not mutually exclusive. By designing circularity into the core architecture, we’ve created a UPS platform that extends asset life, reduces waste, lowers energy consumption, and supports evolving AI workloads - all while improving total cost of ownership. This reflects Legrand’s broader sustainability commitments, including being awarded an ‘A’ rating by CDP for the second consecutive year.” The system is designed to scale from 100kW to 1.2MW per frame, with up to 4.8MW available in parallel configurations for larger data centre environments. For more from Legrand, click here.

Tecnair launches new CDUs for data centre cooling

Tecnair, a manufacturer of close control air conditioning units for data centres and a Panasonic company, has introduced a new range of coolant distribution units (CDUs) designed for high-density artificial intelligence and high-performance computing (HPC) data centres. The systems were presented at Data Centre World London 2026, held on 4–5 March, and are intended to support liquid cooling deployments as computing densities increase. Rising AI workloads are pushing rack densities beyond levels typically supported by traditional air cooling. The CDU range has been developed to support liquid cooling architectures, including direct-to-chip and immersion cooling, helping data centre operators manage higher thermal loads. The units are designed for environments where rack densities regularly exceed 50kW and are approaching 100kW. Liquid cooling for high-density infrastructure The CDU range is available in capacities of 400kW and 800kW and can be deployed across a range of environments, from edge facilities to hyperscale data centres. The systems include redundant components such as pumps, power supplies, and sensors to support continuous operation in mission-critical environments. A failover capability is also included to maintain cooling during maintenance or component failure. According to Tecnair, the units can achieve partial power usage effectiveness (pPUE) values as low as 1.02 through the use of free-cooling coils and micro-channel heat exchanger technology. Monitoring functions are integrated through Modbus building management system connectivity, enabling real-time visibility of parameters including temperature, pressure, flow rate, water level, and leak detection. The CDU range is designed to integrate with Panasonic cooling systems, including free-cooling chillers using R1234ze refrigerant with a low global warming potential. These chillers use outside air temperatures, down to -10°C, to generate chilled water through a free-cooling function, supporting improved energy efficiency in suitable climates. For more from Tecnair, click here.

Socomec launches energy audit initiative for UKI data centres

Socomec, a manufacturer of low voltage power management systems, has launched an energy audit programme for data centres in the UK and Ireland, aimed at helping operators measure energy use and meet reporting requirements under the EU Energy Efficiency Directive (EED). Under EU EED rules, owners and operators of facilities with a capacity above 500kW must disclose their power usage effectiveness (PUE) and other environmental performance indicators each year. The next reporting deadline is 15 May 2026. The directive closely aligns with the UK’s Energy Savings Opportunity Scheme (ESOS) and the ISO 50001 standard, which requires organisations to monitor and report energy consumption and power utilisation accurately. Improving PUE is also becoming an operational priority for data centres as electricity costs increase and workloads linked to artificial intelligence raise power demand. Socomec estimates that improving PUE by 0.1 - from 1.6 to 1.5, for example - can reduce annual energy consumption by around 6–8%. For a 2MW data centre, this could equate to more than £100,000 in yearly energy savings while also extending the lifespan of existing infrastructure. Energy infrastructure assessments for operators Data centre operators in the UK and Ireland can apply for an assessment of their energy infrastructure through the programme. Socomec’s engineers will carry out site inspections covering IT and non-IT loads, including UPS systems, server racks, cooling equipment, lighting, and switchgear. The aim is to determine PUE and identify gaps in existing metering capabilities. Participating facilities receive a report outlining energy efficiency measures, estimated cost savings, and potential return on investment. The findings are intended to support decision-making across sustainability, finance, and engineering teams. The audits are particularly relevant for older colocation data centres seeking to measure PUE at rack level using Measuring Instrument Directive-compliant metering. More detailed measurement can also allow operators to allocate energy costs more accurately between tenants. Colin Dean, Managing Director of Socomec, says, “The EU EED represents a gold standard for sustainable energy management and it’s only a matter of time before other countries follow Germany’s example and start penalising non-compliance. "In addition, there is a fear - particularly among legacy data centre operators - that a rip-and-replace approach is needed to achieve modern energy efficiency. At Socomec, our aim is to plug this gap with proactive and practical guidance, showing that metering can be retrofitted to improve efficiency without infrastructure overhaul or operational downtime. “Our energy audit is designed to help operators of mission-critical data centres take informed action towards sustainability while maximising their investments. With clear, accurate insights into PUE, data centres can turn energy data into action, optimise operational costs, and drive long-term resilience.”

'Rising power costs top data centre concern'

New research from UK colocation data centre provider Asanti shows that AI adoption, resilience pressures, and rising power costs are reshaping data centre strategies for UK organisations, with material implications for managed service providers (MSPs), cloud providers, and infrastructure partners. In a survey of 100 senior IT decision makers, nearly half (48%) said AI adoption will have a large influence on their IT infrastructure strategy over the next three years, ahead of regulatory change and hybrid or multi-cloud capabilities. IT leaders report average rack densities of 8kW per rack today, rising to 11kW within 12 months, as AI-heavy workloads and high-density compute drive up power and cooling requirements. Rising power costs are already the top concern regarding current data centre environments, cited by 52% of respondents, ahead of maintaining uptime (48%). Over the next three years, rising energy costs (34%) and sustainability commitments (33%) sit alongside AI, resilience, and regulatory change as core inputs to infrastructure strategy. Stewart Laing, CEO of Asanti, notes, “AI has moved from pilot projects to production workloads, and with it comes a step-change in rack density, power demand, and cooling requirements. Organisations are realising they need the right mix of facilities, partners, and architectures to deliver compute and storage requirements without compromising on resilience, sovereignty, or cost control.” Resilience and sovereignty drive hosting decisions Over the next 12 months, cybersecurity and resilience are the most common focus for infrastructure investment, cited by 51% of IT leaders. In response to cyberattacks and service disruptions in 2025, organisations are strengthening security controls (60%), creating backup strategies across multiple data centre providers/locations (50%), and reviewing business continuity planning (42%). A third (33%) plan to move more workloads into on-premise or colocation environments to strengthen their IT resilience. Location decisions are becoming more polarised, with 30% of organisations already using data centres outside the UK and a further 24% planning to do so, while 32% say they use only UK-based data centres. The research suggests a push‑pull between cost and sovereignty: high UK power costs draw some workloads overseas, but data protection obligations, regulatory exposure, and latency considerations keep others anchored in UK facilities. Stewart continues, “For MSPs and infrastructure partners, the opportunity is to help customers design architectures that balance the needs of today, sovereignty, compliance, and resilience with AI ambition. That increasingly means hybrid strategies that combine UK-based colocation for critical workloads with selective use of overseas capacity and public cloud where it makes sense.” Opportunity for MSPs and infrastructure partners The study shows strong and sustained demand for external expertise. More than half of organisations (54%) already use third parties for cybersecurity services, while around a third bring in external partners for infrastructure audits (35%), disaster recovery and business continuity planning (33%), and end-to-end solution deployment (35%). Looking ahead over the next 12 months, organisations expect to increase their use of external support for public cloud repatriation (32%) and technical scoping for new projects (31%), signalling a shift towards more intentional workload placement and right‑sizing. Stewart concludes, “As power, AI, and sovereignty concerns collide, few organisations can carry all the skills they need in‑house. MSPs, systems integrators, and specialist data centre providers have a critical role in helping enterprises architect for higher densities, navigate cross border data complexity, and build resilient, multi‑site infrastructure that can withstand disruption.” The full whitepaper, From Misconception to Momentum: 2026 Trends for the UK’s Data Centre Sector, is available by clicking here. For more from Asanti, click here.